参考文献
Bragin, O. V.; Khelkovskaya-Sergeeva, E. G.; Liberman, A. L.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1980 , vol. 29, p. 1774 - 1778
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1980 , # 11 p. 2513 - 2518